Other Functions - Netatmo Weather Station User Manual

Consequences
CO2 is not dangerous when kept within such values. Nevertheless, when it rises over 1000 ppm, it is an
indication that indoor air has not been renewed for a long time. If this happens, ventilating the room is a
simple and effective action.
Over 2000 ppm CO2 can also cause sleepiness and slight headaches.
CO2 Alerts
When the CO2 level rises above 1000 ppm, a first notification is sent to your iPhone/Android and the indoor
module briefly lights up in yellow.
When the CO2 level goes above 2000 ppm, a second alert is sent to your iPhone/Android and the indoor
module briefly lights up in red.
How does the Netatmo station measure the CO2 concentration?
Your CO2 sensor measures CO2 by an optical process: the Station embeed a light bulb and an infrared
receiver. Light is emitted by the light bulb and partially absorbed by the CO2 contained in the ambient air. The
higher the CO2 level, the more light is absorbed. At the end the infrared receiver measures the amount of light
received and deduce the CO2 level from it. This method works regardless of the ambient light.
Calibration
To ensure accuracy of your CO2 measurements, the Netatmo Weather Station automatically and regularly
recalibrates its CO2 sensor. This calibration is performed assuming that the CO2 level surrounding the station
lowers to 400 ppm at least once a week. To achieve a precise calibration, make sure to ventilate the room for
a period of time long enough to entirely renew the room air.
Sound meter
Sound meter
Acoustic comfort measurement
Acoustic comfort is measured by the indoor module.
You can visualize data and measurements directly on the Netatmo App dashboard.
How does the Netatmo station measure acoustic comfort?
The Netatmo weather station records the average noise level (in dB) over a 5 minutes interval, and evaluates
the surrounding acoustic comfort from it.
Did you know it?
- The usual human ear cannot distinguish sounds below 30 dB.
- A prolongated exposure to sounds levels over 65 dB noticeably disminishes your ability to concentrate.
- In many countries, continuous exposure to noise during a workday is limited to a 85 dB level.
- Sounds over 95 dB can put your hearing at risk.

Other functions

Other functions